Rubber heel-lift.



A. A. GLIDDEN.

RUBBER HEEL LIFT. APPLIGAT ION FILED APR.23, 1910v I Patented Apr. 15,1913 all!!! i fiventof;

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ments in rubber overshoes and has nn san'rns ra'rnn'r OFFICE.

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RUBfiEE HEEL-LIFT.

Specification of Letters Patent.

Patented Apr. 15, 1913.

T 0 all whom it may concern:

Be it known that I, ALFRED A. Gunman, citizen of the United States,residing at Watertown, Massachusetts, have invented certain new anduseful Improvements in Rubber Heel-Lifts, of which the following is aspecification.

My present invention relates to im roveor its object to strengthen theshoe and enhance its wearing quality, preventing the breaking (acracking of the same in proximity to the heel, which is very common whenthe overshoe is worn: over the hi h heeled ladies shoes now so generallyuse The invention includes the novel features hereinafter described andparticularly defined by the appended claims.

Rubber overshoes embodying my invention are shown in the accompanyingdrawings, in which, 1

Figure 1 is a sectional view of such an over-shoe. Fig. 2 is a similarview of a modification, and Fig. 3 is a view ofa further modification.Fig. i is a section through the line A B of Fig. 1. I

Referring by reference characters to this drawin the numeral 4designates an oven shoe 0 the ordinary construction. Upon the inside ofthe shoe and directly over the heel 5 ll place a lift of soft rubbercompound 6, which is made of uncured stock and applied in place beforethe shoe is vulcanized, so that when the shoe, with the inserted insidelift is vulcanized, the said lift is held firmly in place and becomes anintegral part of the shoe. At the same time it provides a soft elasticmedium between the heel of the leather boot and the inner face of theovershoe. This I have found by experience preventscrackin or breaking ofthe overshoe around the loci.

I prefer to provide the lift with a thinner portion extending upwardlyfrom its edge around the sides and rear of the heel, as indicated at 7,and the fabric lining 8 is caused to overlap the upper edge of the part7. Similarly the inner fabric sole lining 9 is caused to overlap thefront edge of the heel portion as indicated at 10.

While the flange or box like formation of the rubber lift or lining isdesirable, I have found that material advantages are secured by the useof forms such as shown in Figs. 2 and 3.

In Fig. 2 only the upwardly extending flange or portion at the front ofthe rubber lift 6 is used, While in Fig. 3 the lift .6 is

shown ashavin'g n'o marginal flange at all. While a rubber lift from aplain sheet of rubber compound may be used, I have found it advantageousto use a lift madein-three efi'ect obtained in the all ru ber lift,while the metal insertion gives the stability neeessary. I

I have found-that this hit or heel' sea-t socket may be fastened in theovershoe either by cementing or bymechanical means after In this casethe the ovcrshoe is vulcanized. lift or socket is formed and vulcanizedin any of the well known methods and applied to the inside of theovershoe by any esired method. The elastic cushion effect is obtainedwhether applied before or after the overshoe is vulcanized.

' Having thus described my invention what I claim is: x p

1. A rubber overshoe havlng a depressed heel seat and a lift of softrubber compound completely covering the upper surface of said depressedseat and vulcanized thereto.

2. A rubber overshoe having a depressed heel seat'and a lift of softrubber com ound ap lied to and completely covering e in si e upper faceof the heel and having an upwardly extending marginal flange, said liftand flange being vulcanized in place.

In testimony whereof, I aflix my signature in presence of two witnesses.

ALFRED A. GLIDDEN.

Witnesesf O. H. Rornn, T. M. READ.

